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/*
* Copyright 2014 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include <linux/sched.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include "kfd_priv.h"
static const struct kgd2kfd_calls kgd2kfd = {
.exit = kgd2kfd_exit,
.probe = kgd2kfd_probe,
.device_init = kgd2kfd_device_init,
.device_exit = kgd2kfd_device_exit,
.interrupt = kgd2kfd_interrupt,
.suspend = kgd2kfd_suspend,
.resume = kgd2kfd_resume,
.quiesce_mm = kgd2kfd_quiesce_mm,
.resume_mm = kgd2kfd_resume_mm,
.schedule_evict_and_restore_process =
kgd2kfd_schedule_evict_and_restore_process,
.pre_reset = kgd2kfd_pre_reset,
.post_reset = kgd2kfd_post_reset,
};
int sched_policy = KFD_SCHED_POLICY_HWS;
module_param(sched_policy, int, 0444);
MODULE_PARM_DESC(sched_policy,
"Scheduling policy (0 = HWS (Default), 1 = HWS without over-subscription, 2 = Non-HWS (Used for debugging only)");
int hws_max_conc_proc = 8;
module_param(hws_max_conc_proc, int, 0444);
MODULE_PARM_DESC(hws_max_conc_proc,
"Max # processes HWS can execute concurrently when sched_policy=0 (0 = no concurrency, #VMIDs for KFD = Maximum(default))");
int cwsr_enable = 1;
module_param(cwsr_enable, int, 0444);
MODULE_PARM_DESC(cwsr_enable, "CWSR enable (0 = off, 1 = on (default))");
int max_num_of_queues_per_device = KFD_MAX_NUM_OF_QUEUES_PER_DEVICE_DEFAULT;
module_param(max_num_of_queues_per_device, int, 0444);
MODULE_PARM_DESC(max_num_of_queues_per_device,
"Maximum number of supported queues per device (1 = Minimum, 4096 = default)");
int send_sigterm;
module_param(send_sigterm, int, 0444);
MODULE_PARM_DESC(send_sigterm,
"Send sigterm to HSA process on unhandled exception (0 = disable, 1 = enable)");
int debug_largebar;
module_param(debug_largebar, int, 0444);
MODULE_PARM_DESC(debug_largebar,
"Debug large-bar flag used to simulate large-bar capability on non-large bar machine (0 = disable, 1 = enable)");
int ignore_crat;
module_param(ignore_crat, int, 0444);
MODULE_PARM_DESC(ignore_crat,
"Ignore CRAT table during KFD initialization (0 = use CRAT (default), 1 = ignore CRAT)");
int noretry;
module_param(noretry, int, 0644);
MODULE_PARM_DESC(noretry,
"Set sh_mem_config.retry_disable on GFXv9+ dGPUs (0 = retry enabled (default), 1 = retry disabled)");
int halt_if_hws_hang;
module_param(halt_if_hws_hang, int, 0644);
MODULE_PARM_DESC(halt_if_hws_hang, "Halt if HWS hang is detected (0 = off (default), 1 = on)");
static int kfd_init(void)
{
int err;
/* Verify module parameters */
if ((sched_policy < KFD_SCHED_POLICY_HWS) ||
(sched_policy > KFD_SCHED_POLICY_NO_HWS)) {
pr_err("sched_policy has invalid value\n");
return -EINVAL;
}
/* Verify module parameters */
if ((max_num_of_queues_per_device < 1) ||
(max_num_of_queues_per_device >
KFD_MAX_NUM_OF_QUEUES_PER_DEVICE)) {
pr_err("max_num_of_queues_per_device must be between 1 to KFD_MAX_NUM_OF_QUEUES_PER_DEVICE\n");
return -EINVAL;
}
err = kfd_chardev_init();
if (err < 0)
goto err_ioctl;
err = kfd_topology_init();
if (err < 0)
goto err_topology;
err = kfd_process_create_wq();
if (err < 0)
goto err_create_wq;
kfd_debugfs_init();
return 0;
err_create_wq:
kfd_topology_shutdown();
err_topology:
kfd_chardev_exit();
err_ioctl:
return err;
}
static void kfd_exit(void)
{
kfd_debugfs_fini();
kfd_process_destroy_wq();
kfd_topology_shutdown();
kfd_chardev_exit();
}
int kgd2kfd_init(unsigned int interface_version,
const struct kgd2kfd_calls **g2f)
{
int err;
err = kfd_init();
if (err)
return err;
*g2f = &kgd2kfd;
return 0;
}
EXPORT_SYMBOL(kgd2kfd_init);
void kgd2kfd_exit(void)
{
kfd_exit();
}
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